JPH0621185Y2 - Connector for crimp connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a connector for crimp connection.

[Conventional technology]

Japanese Patent Laid-Open No. 216373/1983 discloses a press-connecting connector in which an insulating housing is composed of two blocks which are integrally connected to each other by a hinge portion so as to be openable and closable. In this known connector, the pressure contact groove portion of the pressure contact terminal is positioned on the side of the one block facing the other block so that the one block faces the pressure contact groove portion with the two blocks open. A cable is arranged in the pressure contact groove, and then the other block is closed to press the cable into the pressure contact groove for pressure contact connection.

In such a connector, since the two blocks are not separated in the unused state, the mating block is not lost and it is extremely easy to handle, and the two blocks are simply closed when crimping. Since the positioning is performed, the work is sure and easy.

[Problems to be solved by the device]

However, in the above-mentioned publicly known connector, the two blocks are open, but the two ends are connected to each other, just before the crimp connection, that is, in the state where the cable is arranged so as to face the crimp groove. It faces the hinge part in the vicinity thereof. Therefore, under such a condition, a so-called electrical test, which is a test for checking the number wire by contacting the core wire of the cable end surface, is performed to check whether or not the predetermined cable is arranged so as to face the pressure contact groove portion of the predetermined pressure contact terminal. I can't do it.

An object of the present invention is to solve such a problem and to provide a crimp connection connector that can easily perform the above-mentioned electrical inspection before and after crimp connection.

[Means for Solving the Problems]

According to the present invention, the above-mentioned object is to integrally connect the pressure contact block and the terminal block with each other at one end by a hinge so as to integrally form an insulating housing, and the terminal block faces the pressure contact block. The pressure contact groove portion of the pressure contact terminal is erected on the side so as to hold the pressure contact terminal, and the pressure contact block has a cable holding portion formed with a holding hole for holding the cable by penetrating the cable from the rear side. The holding portion is formed with a receiving groove for receiving the pressure contact groove portion at a portion corresponding to the pressure contact groove portion.
A V-shaped groove is provided at the front end of the cable holding portion for holding the cable under clamping pressure. The V-shaped groove is formed in a direction in which the axis of the V-shaped groove is orthogonal to the axis of the holding hole. And has a cable cutting guide surface extending in a direction obliquely intersecting the axis of the V-shaped groove.

[Action]

In the connector of the present invention, the cable holding portion of the crimping block is pierced with the cable before the crimping block and the terminal block are coupled to each other, so that the tip of the protruding cable is the bottom of the V-shaped groove. It is pressed so that it is held at a narrow pressure, and the extra length portion is cut along the cable cutting surface by an appropriate blade. Thus, even immediately before the pressure connection, the core wire at the cut end of the cable held by the V-shaped groove is externally contacted with the probe of the electrographic device to perform the electric inspection.

After confirming the proper cable layout as a result of the electrical inspection, by completely connecting the crimping block to the terminal block, the cable is pushed into the crimping groove by the crimping block and crimp connection is made. Get the connector.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 (A) and 1 (B) are perspective views of the connector with the cable connected, as seen from the front and rear directions, and FIGS. 2 (A), (B), and (C) are the connector shown in FIG. It is a longitudinal cross-sectional view which shows the procedure of pressure connection.

The connector of this embodiment comprises an insulation housing 3 composed of a pressure contact block 1 and a terminal block 2 as shown in the figure, and a pressure contact terminal 4.

The press contact block 1 and the terminal block 2 are integrally connected by a flexible hinge portion 5 and are formed of an insulating material. Thus, the press contact block 1 and the terminal block 2 can be freely opened and closed centering on the hinge portion 5, and in the completely closed state, a locking portion (not shown) that snaps together.
have.

In the terminal block 2, a terminal groove 6 for holding a plurality of pressure contact terminals 4 at intervals in a direction perpendicular to the paper surface in FIG. 2 (A).
Are formed. The terminal groove 6 has an opening (opening 6A) on the front side (left side in the drawing) so as to receive a contact terminal (not shown) of the mating connector.

The pressure contact terminals 4 respectively accommodated in the plurality of terminal grooves 6 of the terminal block 2 have an L-shaped cross section. The press-connecting terminal 4 has a U-shaped groove 4A into which a mating contact is press-fitted at the front end facing the opening 6A, and a U-shaped press-connecting groove 4B into which a cable is press-fitted at the upright rear end. have.

On the other hand, the pressure contact block 1 integrally connected to the terminal block 2 by the hinge portion 5 is formed with a holding hole 7 as a cable holding portion for holding the cable by inserting the cable from the rear side and penetrating it. . The cable insertion side of the holding hole 7 (right side in FIG. 2 (A)) is chamfered in a tapered shape for the purpose of facilitating the insertion of the cable. A plurality of such holding holes 7 are provided at positions corresponding to the plurality of terminal grooves 6 (pressure contact terminals 4) in the direction perpendicular to the paper surface in FIG. 2 (A). A V-shaped groove 8 (see FIG. 1 (B)) is provided on the protruding side (left side in FIG. 2 (A)) of the holding hole 7 after the cable penetrates to hold the cable by pinching the cable. ) Is formed so as to extend in a direction perpendicular to the axis of the holding hole 7. Therefore, the open edge (wide side) of the V-shaped groove 8 is set wider than the cable, and the bottom (narrow side) is set smaller in width than the cable. The V-shaped groove has a cable cutting guide surface obliquely intersecting the axis of the V-shaped groove at the end of its axis (axis extending at right angles to the V-shaped cross section). The bent cable can be cut by a blade such as a knife used along the cutting guide surface.

The pressure contact block 1 is formed with a receiving groove 9 capable of receiving the pressure contact groove portion 4B of the pressure contact terminal 4 housed in the terminal block 2 when the pressure contact block 1 is closed with respect to the terminal block 2. There is.

Next, a method of assembling and using the connector of this embodiment having the above structure will be described.

First, as shown in FIG. 2 (A), the pressure contact block 1 and the terminal block 2 which are open to each other are prepared.

Next, in the above state or in the state where the pressure contact block 1 is lightly closed with respect to the terminal block 2 as shown in FIG. 2 (B), the cable C is inserted into each holding hole 7 from the direction of the arrow P, and the tip end becomes sufficient. The holding hole 7 is projected with a certain length.

Thereafter, the tip of the cable C protruding from the holding hole 7 is lifted upward as indicated by the arrow Q, and the cable C is strongly pushed into the bottom of the V-shaped groove 8. Thus, the cable C is held under a narrow pressure in the V-shaped groove 8 to prevent the cable C from coming off during work. Then, the extra length is cut off with a nipper 10 or the like.

In this state, the cable C with the extra length cut off
At the cross-section, the core wire is brought into contact with a stylus (not shown) of an electrogram tester to perform electrogram.

After confirming by electric inspection that each cable is arranged at the position of the predetermined pressure contact terminal, the pressure contact block 1 is connected to the terminal block 2
Close strongly to bond to each other. Then, at that time, the cable C is pressed by the pressure contact block 1 and the pressure contact terminal 4 is pressed.
The core of the cable C pushed into the pressure contact groove 4B comes into contact with the pressure contact terminal. And the press contact terminal 4 is the above press contact groove 4B.
Is received in the receiving groove 9. Thus,
The crimp connection of the connector of this embodiment is completed, and as shown in FIG.
Obtain a connector with cable as shown in (B).

In such a connector with a cable, the front end portion (the left end portion in FIG. 2 (C)) is inserted into the receiving recess of the mating connector (not shown), and the contactor protruding into the receiving recess enters the opening 6A. The U-shaped groove portion 4A of the pressure contact terminal 4 is fitted and connected.

[Effect of device]

In the present invention, the cable is penetrated and held in the V-shaped groove as described above, and then cut along the cable cutting guide surface, so that the cable cross section in the V-shaped groove is present even before and after the pressure connection. Since it is now possible to perform an electrical test by contacting the core wire from the outside, it has become possible to prevent work mistakes such as incorrect insertion of the cable in advance. further,
Since the cable is held in the V-shaped groove, it is possible to perform pressure connection connection with the cable fixed to ensure the work. Further, since the V-shaped groove can surely hold the cable even if the thickness of the cable is slightly changed, it is possible to improve adaptability to different types of cables.

[Brief description of drawings]

1 (A) and 1 (B) are perspective views of the connector with the cable connected, as seen from the front and rear directions, and FIGS. 2 (A), (B), and (C) are the connector shown in FIG. It is a longitudinal cross-sectional view which shows the procedure of pressure connection. 1 ... Pressure contact block 2 ... Terminal block 3 ... Insulation housing 4 ... Pressure contact terminal 4B ... Pressure contact groove part 5 ... Hinge part 7 ... Cable holding part (holding hole) 8 ... V-shaped groove 9 ... Receiving groove C …… Cable

Claims (1)

[Scope of utility model registration request] 1. An insulating housing is formed by integrally connecting a pressure contact block and a terminal block at one end thereof with a hinge so as to be openable and closable, and the terminal block has a pressure contact terminal on a side opposite to the pressure contact block. The pressure contact groove is erected to hold the pressure contact terminal, and the pressure contact block has a cable holding portion formed with a holding hole for holding the cable by penetrating the cable from the rear side. A receiving groove for receiving the pressure contact groove portion is formed in a portion corresponding to the groove portion, and further,
A V-shaped groove is provided at the front end of the cable holding portion for holding the cable under clamping pressure. The V-shaped groove is formed in a direction in which the axis of the V-shaped groove is orthogonal to the axis of the holding hole. And a cable cutting guide surface extending in a direction obliquely intersecting the axis of the V-shaped groove.